ECU (AHLS) Inspection
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
- Plug GDS to Data Link Connector (DLC).
- Start the engine and turn on the auto headlight system.
- Clear the DTC using the GDS.
- Did the same DTC return?
YES
- Replace the cluster with an usable one. If the cluster works properly, replace it.
- Complete the download process for parameters (vehicle information) at 'Optional Test' after replacing the AHLS ECU.
NO
- Fault can be intermittent. Or, the AHLS ECU's memory was not cleared after repair. Thoroughly check connectors and wire harness for looseness, poor contact, bending, corrosion, deterioration, or damage.